Forgot to add when I clean the parts I use mesh compartment trays. But in the beginning I used mini glass vials filled with cleaning fluid and each one was numbered and I also numbered the compartments of the tray. So each tray section would correspond with the glass vial. I still use this method today when dealing with an unfamiliar movement. But if you have disassembled and reassembled enough movements you kinda start to just know where everything goes, kinda like when you move to a new town you don’t know where everything is, you use gps a few times get to know your area and grid, then you just know.
I know some very old books mention using gasoline for cleaning, but these were written when gasoline was a very different animal regarding additives (and folks were a little more carefree about safety). I think something like Coleman fuel is close to old timey gasoline; camp stoves that are made to run Coleman fuel will have problems with gasoline (except models made for both), mainly due to clogging issues. When I needed Coleman fuel here for my old U.S. made stove the old man at the chemist shop said to use regular benzine, which I have on hand in the workshop for---- cleaning parts. Works great.